1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.wiki.action;
24  
25  import com.liferay.portal.kernel.servlet.SessionErrors;
26  import com.liferay.portal.security.auth.PrincipalException;
27  import com.liferay.portal.struts.PortletAction;
28  import com.liferay.portlet.wiki.NoSuchNodeException;
29  import com.liferay.portlet.wiki.model.WikiNode;
30  
31  import javax.portlet.PortletConfig;
32  import javax.portlet.RenderRequest;
33  import javax.portlet.RenderResponse;
34  
35  import org.apache.struts.action.ActionForm;
36  import org.apache.struts.action.ActionForward;
37  import org.apache.struts.action.ActionMapping;
38  
39  /**
40   * <a href="ViewNodeAction.java.html"><b><i>View Source</i></b></a>
41   *
42   * @author Jorge Ferrer
43   */
44  public class ViewNodeAction extends PortletAction {
45  
46      public ActionForward render(
47              ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
48              RenderRequest renderRequest, RenderResponse renderResponse)
49          throws Exception {
50  
51          try {
52              WikiNode node = ActionUtil.getNode(renderRequest);
53  
54              if (node == null) {
55                  ActionUtil.getFirstVisibleNode(renderRequest);
56              }
57          }
58          catch (Exception e) {
59              if (e instanceof NoSuchNodeException ||
60                  e instanceof PrincipalException) {
61  
62                  SessionErrors.add(renderRequest, e.getClass().getName());
63  
64                  return mapping.findForward("portlet.wiki.error");
65              }
66              else {
67                  throw e;
68              }
69          }
70  
71          return mapping.findForward(
72              getForward(renderRequest, "portlet.wiki.view_node"));
73      }
74  
75  }